Elecraft K1BKLTKT LCD Mod Kit User Manual
Page 4
cleanly between the PC board pins for the LCD (DS1) and, when placed up against C4 (just to
the right of the LCD), it will just clear the leftmost four pins of U2 and U3 (just to the right of S1
and S2 on the left side of the PC board). Refer to the illustration below.
15.
Locate the K1 LED backlight. The front side of the backlight is
protected by a thin sheet of clear plastic which should be removed.
However, DO NOT REMOVE the thin white plastic sheets covering
the front and back of the backlight. These sheets MUST remain in
place. Note that the LED pins are built into a small plastic block
which is embedded into the edge of the clear plastic backlight lens.
16.
Using a pair of needle-nosed pliers, or similar device, grasp
one of the LED leads about 1/16" (1.6mm) from the point at
which it enters the white plastic block, and carefully bend the
lead so it is parallel to the body of the backlight body, as shown
at right. Repeat this step for both leads.
17.
Trim the length of the LED leads to 1/8" (3.2mm), as shown at
right.
18.
Using a sharp blade (a razor blade or Xacto knife works well),
carefully score the protective covering of the foam tape 1/8"
(3.2mm) from its left edge (see illustration) and remove the scored
covering to expose the adhesive of the foam.
19.
Taking care to not pull loose the thin white plastic covers which
are attached to the front and back of the LED backlight, carefully
remove the masking tape from the cut end of the LED backlight,
20.
With its LED leads positioned to the left, as illustrated, and with
the right edges of both the LED backlight and the insulator card
assembly aligned, place the LED backlight on top of the foam,
and press down lightly.
NOTE: The "K" and "A" annotations shown on the illustration
indicate the cathode (K) and anode (A) of the LED within the
backlight. This nomenclature is printed on the back side of the
backlight, but is shown here for future reference. The Anode
(A) pin will always be the bottom of the two pins.